///////////////////////////////////////////////////////////////////////////////////////////////
//
//    This File is Part of the CallButler Open Source PBX (http://www.codeplex.com/callbutler
//
//    Copyright (c) 2005-2008, Jim Heising
//    All rights reserved.
//
//    Redistribution and use in source and binary forms, with or without modification,
//    are permitted provided that the following conditions are met:
//
//    * Redistributions of source code must retain the above copyright notice,
//      this list of conditions and the following disclaimer.
//
//    * Redistributions in binary form must reproduce the above copyright notice,
//      this list of conditions and the following disclaimer in the documentation and/or
//      other materials provided with the distribution.
//
//    * Neither the name of Jim Heising nor the names of its contributors may be
//      used to endorse or promote products derived from this software without specific prior
//      written permission.
//
//    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
//    ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
//    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
//    IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
//    INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
//    NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
//    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
//    WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
//    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
//    POSSIBILITY OF SUCH DAMAGE.
//
///////////////////////////////////////////////////////////////////////////////////////////////

using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;

namespace Controls
{
    public class ToolStripEx : ToolStrip
    {
        private int shadowHeight = 3;
        private Color shadowColor = Color.Silver;

        public ToolStripEx() : base()
        {
            this.Padding = new Padding(this.Padding.Left, this.Padding.Top, this.Padding.Right, shadowHeight);
        }

        public Color ShadowColor
        {
            get
            {
                return shadowColor;
            }
            set
            {
                shadowColor = value;
                this.Invalidate();
            }
        }

        public int ShadowHeight
        {
            get
            {
                return shadowHeight;
            }
            set
            {
                shadowHeight = value;

                this.Padding = new Padding(this.Padding.Left, this.Padding.Top, this.Padding.Right, shadowHeight);

                this.Invalidate();
            }
        }

        public override Size GetPreferredSize(Size proposedSize)
        {
            Size prefSize = base.GetPreferredSize(proposedSize);

            prefSize.Height += ShadowHeight;

            return prefSize;
        }

        protected override void OnPaintBackground(PaintEventArgs e)
        {
            base.OnPaintBackground(e);

            if (shadowHeight > 0)
            {
                Rectangle gradRect = Rectangle.FromLTRB(0, this.Height - shadowHeight - 1, this.Width, this.Height);

                using (LinearGradientBrush gradientBrush = new LinearGradientBrush(gradRect, shadowColor, this.BackColor, 90))
                {
                    e.Graphics.FillRectangle(gradientBrush, gradRect);
                }
            }
        }
    }
}
